1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Inga [223]
3 years ago
8

HAL SPENT 3/4 HOUR READING EACH DAY FOR 7 DAYS. HOW MUCH TOTAL TIME DID HE SPEND READING?

Mathematics
1 answer:
jasenka [17]3 years ago
4 0
It’s 315 hours because 60 divided by 4 equals 15 then multiply 15 and 3 equals 45 then multiply 45 and 7
You might be interested in
A = 3 and c = 12 c/a =
Bess [88]

Answer:

4, because 12/3 is 4 cause 3×4=12

3 0
3 years ago
9) Three times a number added to 12 gives -6. Find the number.​
KatRina [158]

Answer:

The number is -6.

Step-by-step explanation:

Variable x = a number

Set up an equation:

3x + 12 = -6

Isolate variable x:

3x = -18

x = -6

Check your work:

3(-6) + 12 = -6

-18 + 12 = -6

-6 = -6

Correct!

7 0
3 years ago
Read 2 more answers
What is 6.685 rounded to the nearest hundredths place
loris [4]

Answer:

6.69

Step-by-step explanation:

The hundredths place is two decimal places to the right. This lands you at 8, so you must look at the number after it to determine whether you round up or down. So you look at 5, which rounds the 8 up to 9. Therefore, it is 6.69

7 0
3 years ago
Read 2 more answers
The estimate of the population proportion should be within plus or minus 0.02, with a 90% level of confidence. The best estimate
Rudiy27

Answer:

The sample size required is 910.

Step-by-step explanation:

The confidence interval for population proportion is:

CI=\hat p\pm z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }

The margin of error is:

MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }

Given:

\hat p = 0.16\\MOE= 0.02\\Confidence\ level =0.90

The critical value of <em>z</em> for 90% confidence level is:

z_{\alpha /2}=z_{0.10/2}=z_{0.05}=1.645 *Use a standard normal table.

Compute the sample size required as follows:

MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }\\0.02=1.645\times \sqrt{\frac{0.16(1-0.16)}{n} }\\n=\frac{(1.645)^{2}\times 0.16\times (1-0.16)}{(0.02)^{2}} \\=909.2244\\\approx910

Thus, the sample size required is 910.

5 0
3 years ago
HELP PLEASE!
zzz [600]
The answer is B djiekljfjroeo
4 0
3 years ago
Other questions:
  • You and a friend both would like a salad and a small drink. Between the two of you you have $8.00. A salad costs $2.49 and a sma
    6·1 answer
  • Describe the location of the given points in relation to the origin.
    10·1 answer
  • What is the solution of Wx2+49 = x+5?<br> 0 x=13<br> x=-12<br> x = -6 or x = -3<br> no solution
    12·1 answer
  • Find the equation of the line through the points (−2,7) and (0,5).
    12·1 answer
  • A cruise ship travels east across a river at 19.0 meters per minute. If the river is 4,250 meters wide, how long does it take fo
    10·2 answers
  • Need help please. Need the answer now
    15·2 answers
  • A simple off bacteria is debating according to the half life model. If the simple begins with 800 bacteria, and after 18 minutes
    8·1 answer
  • Jackie made bracelets for 8 days. When he was done he had 96 bracelets. Choose an equation that expresses how many bracelets Jac
    7·1 answer
  • 2+3=8,<br> 3+7=27,<br> 4+5=32,<br> 5+8=60,<br> 6+7=72,<br> 7+8=??<br><br> Solve it
    13·2 answers
  • − 1/2 x + 1/3 &gt; 3/5 PLEASE HEPL MEEE!!! A Quick!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!